Democratic presidential candidate Hillary Clinton campaigns with Vice President Joseph R. Biden Jr. in Scranton, Pennsylvania, on Monday. Clinton has opened up a large lead in polls in Pennsylvania and other battleground states. (Tom Williams/CQ Roll Call)

As Hillary Clinton's lead in the polls continues to hold, a pro-Clinton super PAC is suspending advertisements in three major swing states, despite the fact that many voters still say they don't trust her.

Priorities USA Action, a super PAC that was started to support President Barack Obama in 2012 and now backs Clinton, announced it was suspending advertising in Virginia, Colorado and Pennsylvania from Sept. 2 to 20.

But another NBC pollconducted with SurveyMonkey found that while Clinton would defeat Trump if the election were held today, only 11 percent say the Democrat is trustworthy. Conversely, 16 percent believe the same about Trump.